Radish insects A Lecture By Allah Dad Khan Provincial Coordinator IPM MINFAL Islamabad

2. Radish Insects
A
Lecture To ToT trainees ( FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator IPM KPK
MINFAL Pakistan

4. Flea beetles
Phyllotreta spp
Symptoms
• Small holes or pits in leaves that
give the foliage a characteristic
“shothole” appearance; young
plants and seedlings are
particularly susceptible; plant
growth may be reduced; if
damage is severe the plant may
be killed; the pest responsible for
the damage is a small (1.5–3.0
mm) dark colored beetle which
jumps when disturbed; the
beetles are often shiny in
appearance
• Cause
• Insects

5. Wireworms
Aeolus spp.
Anchastus spp.
Melanotus spp.
Limonius spp
Symptoms
• Death of seedlings; reduced
stand; girdled stems and
white heads; wireworm
larvae can be found in soil
when dug round the stem;
larvae are yellow-brown,
thin worms with shiny skin
• Cause
• Insect

6. Cabbage aphid
Brevicoryne brassicaea
Symptoms
• Large populations can cause
stunted growth or even plant
death; insects may be visible
on the plant leaves and are
small, grey-green in color and
soft bodied and are covered
with a white waxy coating;
prefer to feed deep down in
cabbage head and may be
obscured by the leaves
• Cause
• Insect

7. Root maggots
Delia spp.
Symptoms
• Scars and feeding tunnels on
surface of turnip; root damage may
be extensive; larvae are white or
white-yellow in color, reach approx.
1 cm (0.3 in) in length and taper
towards the head; adult insect is a
small fly which resembles a
housefly
• Cause
• Insect
• Comments
• Root maggots will attack all
varieties of crucuferous plants;
insect overwinters as pupae in the
soil